{
  "annotation_id": "db415656-a92c-4c41-91a3-2fc22505169c",
  "date_created": "2026-03-02T18:00:22.151000Z",
  "date_modified": "2026-03-02T18:00:22.151000Z",
  "file_hash": "cc4577ce2f862235e5527789d37242612049af8cac43d658b3234686aee55b1b",
  "private": false,
  "record": {
    "abstract": "Classical periodic orbits responsible for emergence of the superdeformed\nshell structures for single-particle motions in spheroidal cavities are\nidentified and their relative contributions to the shell structures are\nevaluated. Both prolate and oblate superdeformations (axis ratio about 2:1) as\nwell as prolate hyperdeformation (axis ratio about 3:1) are investigated.\nFourier transforms of quantum spectra clearly show that three-dimensional\nperiodic orbits born out of bifurcations of planar orbits in the equatorial\nplane become predominant at large prolate deformations, while butterfly-shaped\nplanar orbits bifurcated from linear orbits along the minor axis are important\nat large oblate deformations.",
    "arxiv_id": "nucl-th/9809005",
    "authors": [
      "K. Arita",
      "A. Sugita",
      "K. Matsuyanagi"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1143/PTP.100.1223",
    "journal_ref": "Prog.Theor.Phys. 100 (1998) 1223-1238",
    "title": "Semiclassical Origin of Superdeformed Shell Structure in the Spheroidal   Cavity Model",
    "url": "https://arxiv.org/abs/nucl-th/9809005"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "485eab9b-0abe-4460-84ba-ae13944a12b6",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}